A new perspective on vegetable oil epoxidation modeling: reaction and mass transfer in a liquid-liquid-solid system

Tapio Salmi, Vincenzo Russo, Adriana Freites Aguilera, Pasi Tolvanen, Johan Wärnå, Martino Di Serio, Riccardo Tesser, Tommaso Cogliano, Sébastien Leveneur, Kari Eränen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A rigorous mathematical model was developed for a complex liquid-liquid-solid system in a batch reactor. The approach is general but particularly well applicable for the indirect epoxidation of vegetable oils according to the concept of N. Prileschajew. The model considers intra- and interfacial mass transfer effects coupled to the reaction kinetics. The liquid phases were described with chemical approach (aqueous phase) and a reaction-diffusion approach (oil phase).The oil droplets were treated as rigid spheres, in which the overall reaction rate is influenced by chemical reactions and molecular diffusion phenomena. The model was tested with a generic example, where two reactions proceeded simultaneously in the aqueous and oil phases.The example (i.e. fatty acid epoxidation à la Prileschajew) illustrated the power of the real multiphase model in epoxidation processes. The proposed modelling concept can be used for optimization purposes for many applications, which comprise a complex water-oil-solid catalyst system.
Original languageEnglish
Article numbere17626
JournalAIChE Journal
Volume68
Issue number5
Early online date5 Feb 2022
DOIs
Publication statusPublished - May 2022
MoE publication typeA1 Journal article-refereed

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